Improvement in illuminating roof-plates



UNITED STATES PATENT OFFICE.

WILLIAM L. SMITH, JR., OF BROOKLYN, NEW YORK.

IMPROVEMENT IN ILLUMINATING ROOF-PLATES.

Specification forming part of Letters Patent No- 156,954, dated November17, 1874; application filed September 5, 1874.

To all whom it may concern:

Be it known that I, WILLIAllI L. SMITH, J r., of Brooklyn, in the countyof Kings and State of New York, have invented a new and use fulImprovement in Illuminating-Tile, of which the following is aspecification:

The invention will first be. fully described, and then pointed out inthe claim.

In the accompanying drawing, Figure 1 is a top view. Fig. 2 is across-section of Fig. 1, taken on the line am. Fig. 3 is across-section, showing the plates separated. Fig. 4 is a view of myimproved guard introduced into a cast-iron vault-light.

Similar letters of reference indicate corresponding parts.

This illuminating tile is made of wrought or malleable iron, or othermalleable metal, so as to make it lighter and less liable to break thanwhen made of cast-iron. It also allows of ventilation, and the applyingof new guards or protectors for the glass at any time.

In the first place I take a sheet of iron or other suitable metal, A, ofsuflicient thickness, and form holes, with collars or Wings B in it, ofa size to suit the glass. 0 is another sheet, in which holes are made ofa size to prevent the glass from falling through, thus forming seats Dfor the glass to rest upon. The holes in the two sheets are punched, soas to correspond with each other in position, and I then fastenthe twosheets together by any suitable means, as bolting, riveting, soldering,or galvanizing.

To allow of ventilation, the two sheets are placed with the collars B,concealed, and so that the sheets are separated by them, as seen in Fig.3. Instead of forming the collars on one of the sheets, the collars maybe made separate, and placed between the sheets of either wrought orcast metals.

E represents the guards for the glass, and they may be made of rivets,bolts, or screws. Guards made in this manner may be applied to oldvault-lights that are worn off smooth, to afford a foothold and preventslipping.

Illuminating-tiles constructed in this manner may be applied to avariety of purposes. It is light, and adapted for roofs and all similarfixtures, as well as sidewalks and vaultlights, and many other purposes.

For purposes of ventilation corrugated iron may be used, but in ordinarycases flat sheets put together, as described, with collars on one, willanswer the desired purpose.

Having thus described my invention,I claim as new and desire to secureby Letters Patent- The combination of two wrought-metal and connectedsheets, A 0, having glass, seats D and collars B, constructedsubstantially as shown and described.

WM. L. SMITH, J R. Witnesses:

T. B. MOSHER, ALEX. F. ROBERTS.

